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Date: Mon, 19 Sep 2011 17:46:54 +0200
From: Roman Divacky <rdivacky@freebsd.org>
To: Jason Harmening <jason.harmening@gmail.com>
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Subject: Re: Crashes in world built w/ clang: FP registers?
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On Sun, Sep 18, 2011 at 11:05:55AM -0500, Jason Harmening wrote:
> > Can you try building just tcsh ? I wonder if -O0 makes any difference...
> >
> > in either case, can you give me preprocessed (clang -E) source that
> > exhibits this bug (check with objdump -d that the unaligned sse read
> > is there) and show me how to reproduce that... I'll try that here.
> >
> >
> > To be honest, I am not sure why others are not seeing this behaviour :(
> >
> > roman
> >
> 
> Building w/ -O0 eliminated the crash in csh at least.  In that case,
> tw_collect() isn't even using the SSE registers.
> I've attached the objdump output for csh for both the -O2 and -O0
> cases, along w/ the preprocessor output for tw.parse.c.

it doesnt build for me.. with tons of errors like

pes ~$ clang tw.parse.cpp 
In file included from ../../contrib/tcsh/tw.parse.c:1:
In file included from ../../contrib/tcsh/tw.parse.c:36:
In file included from ../../contrib/tcsh/sh.h:38:
/usr/include/stddef.h:57:19: error: cannot combine with previous 'type-name'
declaration specifier
typedef __wchar_t wchar_t;
                  ^

how did you get the preprocessed file? and/or how do you compile it?

roman